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 NGC6888 and Soap Bubble Nebula in Cygnus 
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About:
NGC 6888, also known as the Crescent Nebula, is a cosmic bubble about 25 light-years across, blown by winds from its central, bright, massive star. Near the center of this intriguing widefield view of interstellar gas clouds and rich star fields of the constellation Cygnus, NGC 6888 is about 5,000 light-years away. NGC 6888's central star is classified as a Wolf-Rayet star (WR 136) and is shedding its outer envelope in a strong stellar wind, ejecting the equivalent of our Sun's mass every 10,000 years. Burning fuel at a prodigious rate and near the end of its stellar life, this star should ultimately go out with a bang in a spectacular supernova explosion. [Text adapted from APOD]



Pubblications "Flickr" Explore - November 01, 2015
Optics: Takahashi FSQ-106EDXIII F/3.6 383mm. - APO Refractor
Mount: AP Mach1 GTO
Camera: QSI-683WSG
Filters: Astrodon E Series Gen II LRGB 31mm
Guiding Systems: SX Lodestar
Dates/Times: 27 June / 5-19 July 2015
Location: Pragelato - Turin - Italy
Exposure Details: H:R:G:B => 240:150:150:150= > (16x15):(30x5):(30x5):(30x5) All Bin1 [num x minutes]
Cooling Details: -25 C
Acquisition: Maxim DL/CCD, Voyager
Processing: CCDStack2+, PixInsight, PS CS5
Mean FWHM: 1.22 / 2.44
SQM-L: 20.66 / 20.99